TY - GEN
T1 - PM Halbach Arrays in Motors
T2 - 23rd International Conference on Electrical Machines and Systems, ICEMS 2020
AU - Hebala, Ahmed
AU - Nuzzo, Stefano
AU - Connor, Peter H.
AU - Giangrande, Paolo
AU - Gerada, Chris
AU - Galea, Michael
N1 - Publisher Copyright:
© 2020 The Institute of Electrical Engineers of Japan.
PY - 2020/11/24
Y1 - 2020/11/24
N2 - Halbach array configurations represent a common choice in high-performance electrical machines, since a stronger magnetic field is generated for the same Permanent Magnet (PM) volume. Hence, higher torque is developed, and the power density is enhanced. This paper investigates methodologies for reducing the PM losses in Halbach arrangements. A high power density propulsion motor is considered as a case-study and by using Finite Element (FE) software, sensitivity analyses are performed on the main design parameters. Strategies for loss reduction and performance improvements, in terms of torque ripple, total harmonic distortion, efficiency and power density, are investigated and proposed. The effectiveness of axial and radial segmentations, PM edge shape, and semi-magnetic slot wedges are evaluated. Finally, recommendations are made for designing a PM Halbach array.
AB - Halbach array configurations represent a common choice in high-performance electrical machines, since a stronger magnetic field is generated for the same Permanent Magnet (PM) volume. Hence, higher torque is developed, and the power density is enhanced. This paper investigates methodologies for reducing the PM losses in Halbach arrangements. A high power density propulsion motor is considered as a case-study and by using Finite Element (FE) software, sensitivity analyses are performed on the main design parameters. Strategies for loss reduction and performance improvements, in terms of torque ripple, total harmonic distortion, efficiency and power density, are investigated and proposed. The effectiveness of axial and radial segmentations, PM edge shape, and semi-magnetic slot wedges are evaluated. Finally, recommendations are made for designing a PM Halbach array.
KW - Eddy-Current losses
KW - Electrical Machines
KW - Halbach PM array
KW - PMSM
UR - http://www.scopus.com/inward/record.url?scp=85099295788&partnerID=8YFLogxK
U2 - 10.23919/ICEMS50442.2020.9291234
DO - 10.23919/ICEMS50442.2020.9291234
M3 - Conference contribution
AN - SCOPUS:85099295788
T3 - 23rd International Conference on Electrical Machines and Systems, ICEMS 2020
SP - 710
EP - 715
BT - 23rd International Conference on Electrical Machines and Systems, ICEMS 2020
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 24 November 2020 through 27 November 2020
ER -